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南京农业大学专利：一种可移动式木板切割的机构
南京农业大学 可移动式 木板 切割机构
2023/12/5
本实用新型设计一种可移动式木板切割的机构，包括轴承支座一、滑动导轨、旋转电机、滚珠丝杠螺母副、轴承支座二、联轴器、横移电机、电机支架、导轨支撑、V带、切割片、滑块，其特征是滑动导轨固定在导轨支撑上，横移电机固定在电机支架上，旋转电机和切割片固连在滑块上；轴承支座一和轴承支座二固定滚珠丝杠螺母副，横移电机由联轴器带动滚珠丝杠螺母副做旋转运动，进而驱动切割部分在滑动导轨上作横向往复运动；旋转电机由V带...
Rosin-Based Si/P-Containing Flame Retardant Toward Enhanced Fire Safety Polyurethane Foam
bio-resource flame retardant rosin synergistic effect
2023/12/4
Environmentally friendly flame retardant such as polysiloxane has long been sought for varied studies in recent years and can be further improved to overcome the challenges of additional applications....
Effect of Natural Crosslinker on the Properties of Chicken Feather and Modified Vegetable Oil Based Green Composites
Biocomposite natural fiber mechanical properties thermal properties biodegradable
2023/12/4
For the past few decades environmental concerns had been influencing the researchers to employ natural fibers and polymers from renewable resources as a replacement for petroleum-based resins and synt...
Trends in the Diels-Alder reaction in polymer chemistry
REVERSIBLE CLICK CHEMISTRY FREE-RADICAL POLYMERIZATION CROSS-LINKED POLYAMIDES HIGH-PERFORMANCE ACRYLIC-ACID ROOM-TEMPERATURE MALEIC-ANHYDRIDE LEVOPIMARIC ACID BUILDING-BLOCK MUCONIC ACID
2023/12/4
The Diels-Alder (DA) reaction is regarded as quite a useful strategy in organic and macromolecular syntheses. The reversibility of this reaction and the advent of self-repair technology, as well as ot...
Synthetic modifications of abietane diterpene acids to potent antimicrobial agents
Dihydroquinopimaric acid maleopimaric acid antimicrobial activity antitubercular activity M tuberculosis H(37)Rv antifungal activity docking studies
2023/12/4
Among abietane type semisynthetic diterpenoids, a series of quinopimaric and maleopimaric acid derivatives modified at the carboxyl and carbonyl groups, and in ring E were synthesised to obtain new co...
Improvement of physical and mechanical properties of poplar wood via immobilization of rosin by grafting of vinyl chains
Wood polymeric rosin wood impregnation mechanical properties fluorescence microscope
2023/12/4
Rosin is renewable biomass with the potential to enhance wood properties. However, its high leaching rate restricts the durability of rosin impregnation. To immobilize rosin in wood structure, polymer...
Development of a Highly Efficient Environmentally Friendly Plasticizer
adipate effective plasticizer environmentally friendly esterification polyvinyl chloride technological
2023/12/1
The purpose of this work is the synthesis of adipic acid ester and the study of the possibility of its use as a PVC plasticizer. The resulting butyl phenoxyethyl adipate was characterized by Fourier-t...
On the Development of Phenol-Formaldehyde Resins Using a New Type of Lignin Extracted from Pine Wood with a Levulinic-Acid Based Solvent
bio-resins phenolic resins levulinic acid lignin lignocellulosic waste resole resins
2023/12/1
Resole resins have many applications, especially for foam production. However, the use of phenol, a key ingredient in resoles, has serious environmental and economic disadvantages. In this work, ligni...
Epoxy vitrimer based on borate ester bond for green degradation, closed-loop recycling, and ready reprocessing
Green degradation Thermoset Dynamic covalent bond Recyclable
2023/12/1
The three-dimensional network of traditional epoxy resin endows it with suitable properties, but it also presents challenges in reprocessing and recycling. Recent years have witnessed the development ...
Bio-based antibacterial packaging from decorated bagasse papers with natural rosin and synthesised GO-Ag nanoparticles
Bagasse papers antibacterial activity mechanical tests graphene oxide silver nanoparticles natural gum rosin
2023/12/1
The growing awareness of the importance of bacterial-resistant surfaces has increased since the COVID-19 pandemic global problem. Therefore, the need for antibacterial surfaces has become urgent. The ...
Preparation and research of epoxy modified by carboxyl-terminated polybutylene adipate at room temperature
NANOFILLERS IMPROVEMENT RESIN
2023/12/1
In this study, carboxyl-terminated polybutylene adipate (CTPBA) was used to modify epoxy resin, and the modified epoxy resin was cured by a room temperature rapid curing agent (T-31). The effects of C...
Limitations of Diels-Alder Dynamic Covalent Networks as Thermal Conductivity Switches
thermal conductivity thermal switching dynamic covalent networks RAFT polymerization Diels-Alder cross-linking
2023/12/1
Creating polymers that exhibit a switchable thermal conductivity requires a fundamental understanding of how polymer structure and inter- and intramolecular interactions influence thermal transport. T...
Thermal Degradation Behavior of Epoxy Resin Containing Modified Carbon Nanotubes
epoxy resin carbon nanotubes silicone thermal degradation flame retardancy activation energy
2023/12/1
Via the surface-grafting of carbon nanotubes (CNTs) with a silicon-containing flame retardant (PMDA), a novel flame retardant CNTs-PMDA was synthesized. The flame retardancy was tested by cone calorim...
Tannin as a renewable raw material for adhesive applications: a review
INDUCED ACCELERATED AUTOCONDENSATION WOOD ADHESIVES POLYFLAVONOID TANNINS CONDENSED TANNINS
2023/12/1
Considering the limits of petrochemical availability and their toxicity, there has been rapid development and innovation in the field of alternatives for petrochemical adhesives. The carcinogenicity o...
Influence of HLB Value of Emulsifier on the Properties of Microcapsules and Self-Healing Properties of Waterborne Coatings
self-healing microcapsules waterborne coatings HLB value
2023/12/1
In this paper, self-healing microcapsules were prepared by using melamine-formaldehyde (MF) resin as the wall material and shellac as the core material repairing agent. In order to explore the effect ...